Non-volatile semiconductor memory device, electronic card using the same and electronic apparatus

Disclosed is a non-volatile semiconductor memory device comprising a plurality of non-volatile semiconductor memory cells (1a, 1b), an interface (6, 7, 9) making data exchange with an external device to write/read data with respect to the non-volatile semiconductor memory cells, and a control circuit (2a, 2b, 3a, 3b, 4a, 4b, 5a, 5b) for controlling the non-volatile semiconductor memory cells, wherein the interface and the control circuit include a first read mode initialized via a first bootstrap to read data from the non-volatile semiconductor memory cells for continuously outputting (N + M)-byte (N is the n-th power of 2, n is positive integers) data via the interface, and a second read mode initialized via a second bootstrap to read data from the non-volatile semiconductor memory cells for continuously outputting K-byte (K is the k-th power of 2, k is positive integers) data via the interface.